I was able to catch the dirty rat with a rat trap. I placed it outside of the closet door (opened 2 inches) with some peanut butter. I turned out all the lights and left and when I came back it was dead in the trap. Now the hard part, disposing of it. I'm pretty sure he was there solo, but I will reset the trap. I might just throw out the trap and buy a new one. That rat still skeeves me.